TY - JOUR
T1 - Insight into tribological and corrosion behaviour of binderless TiCxNy ceramic composites processed via pulsed electric current sintering technique
AU - Mekgwe, Gadifele Nicolene
AU - Akinwamide, Samuel Olukayode
AU - Akinribide, Ojo Jeremiah
AU - Olubambi, Peter Apata
N1 - Funding Information:
The authors are grateful to National Research Foundation of South Africa for funding this research.
Publisher Copyright:
© 2022 The Authors
PY - 2022/9/1
Y1 - 2022/9/1
N2 - The study presents the corrosion behaviour and wear response of pulsed electric current sintered binderless TiC50N50, TiC70N30, and TiC90N10 based ceramic composites, consolidated by spark plasma sintering (SPS), and the relative densities were evaluated using the Archimedes principle. The microstructural evolutions of the sintered samples were examined through various microscopy techniques, and their susceptibility to corrosion in aggressive chloride environment was assessed using open circuit potential, potentiodynamic polarization and electrochemical impedance spectroscopy (EIS) methods. The microstructural examination of the specimens showed the presence of different phases within the titanium carbonitride (TiCN) cermets. The wear resistance evaluated using the frictional coefficient (COF) and calculated wear rate showed that the specimens exhibited an improved resistance. The specimens further showed enhanced resistance to corrosion in the test electrolyte, as the TiC50N50 cermet displayed enhanced resistance to the aggressive chloride ions in comparison to the other specimens.
AB - The study presents the corrosion behaviour and wear response of pulsed electric current sintered binderless TiC50N50, TiC70N30, and TiC90N10 based ceramic composites, consolidated by spark plasma sintering (SPS), and the relative densities were evaluated using the Archimedes principle. The microstructural evolutions of the sintered samples were examined through various microscopy techniques, and their susceptibility to corrosion in aggressive chloride environment was assessed using open circuit potential, potentiodynamic polarization and electrochemical impedance spectroscopy (EIS) methods. The microstructural examination of the specimens showed the presence of different phases within the titanium carbonitride (TiCN) cermets. The wear resistance evaluated using the frictional coefficient (COF) and calculated wear rate showed that the specimens exhibited an improved resistance. The specimens further showed enhanced resistance to corrosion in the test electrolyte, as the TiC50N50 cermet displayed enhanced resistance to the aggressive chloride ions in comparison to the other specimens.
KW - Electron backscattered diffraction
KW - Frictional coefficient
KW - Potentiodynamic polarization
KW - Spark plasma sintering
KW - TiCN cermets
KW - Titanium nitride
UR - http://www.scopus.com/inward/record.url?scp=85130536784&partnerID=8YFLogxK
U2 - 10.1016/j.ceramint.2022.05.129
DO - 10.1016/j.ceramint.2022.05.129
M3 - Article
AN - SCOPUS:85130536784
SN - 0272-8842
VL - 48
SP - 24793
EP - 24802
JO - Ceramics International
JF - Ceramics International
IS - 17
ER -